Insecure deserialization in Symfony - CVE-2019-10912

Vulnerability identifier: #VU18299

CSH Severity: Medium

CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-10912

CWE-ID: CWE-502

Exploitation vector: Remote access

Exploit availability: No public exploit available

The disclosed vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insecure call of the unserialize() PHP function in untrusted user-input. A remote attacker can send specially crafted HTTP request to the affected system and delete arbitrary files on the system or display raw data output.

Symfony
TYPO3
symfony (Debian package)
php-symfony
php-symfony3
php-symfony4
Fedora

Install updates from vendor's website.

Symfony - addressed in versions 2.8.50, 3.4.26, 4.1.12, 4.2.7
symfony (Debian package) - update to 2.8.7+dfsg-1.3+deb9u2
TYPO3 - update to 9.5.8
php-symfony - addressed in versions 2.8.51-1.fc28, 2.8.51-1.fc29, 2.8.51-1.fc30
php-symfony3 - addressed in versions 3.4.26-1.fc28, 3.4.26-1.fc29, 3.4.26-1.fc30
php-symfony4 - addressed in versions 4.1.12-1.fc29, 4.2.7-2.fc30

• https://symfony.com/blog/cve-2019-10912-prevent-destructors-with-side-effects-from-being-unserialize...

• Multiple vulnerabilities in Symfony framework
• Debian update for symfony
• Multiple vulnerabilities in Typo3
• Fedora 30 update for php-symfony
• Fedora 28 update for php-symfony
• Fedora 29 update for php-symfony
• Fedora 29 update for php-symfony3
• Fedora 30 update for php-symfony3
• Fedora 28 update for php-symfony3
• Fedora 30 update for php-symfony4
• Fedora 29 update for php-symfony4